Countless stars lie within 1.6 light years of the Milky Way's central black hole. But in this
Astrophysicists have a new theory whythe center of the Milky Way, the red giants have disappeared. Scientists believe the supermassive black hole Sagittarius A * released a powerful jet of gas that ripped off the outer layers of the red giants. This turned the stars into smaller red giants or hotter and bluer stars. Such a theory was put forward by Michal Zayachek, an astrophysicist at the Polish Academy of Sciences in Warsaw, and his colleagues in an article published in the Astrophysical Journal.
Today Sagittarius A * is calm, but scientists suggest that the black hole came to life about 4 million years ago, when something fell into it and destroyed the red giants in the center of our galaxy.
The gas disk around the black hole fired a powerfulstream of material into its star-studded environs. Such jets of radiation mostly affect large red giants. They are especially vulnerable due to their large size and thin gaseous envelope.
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